Method of estimating a signal-to-interference+noise ratio (SINR) using data samples

Abstract

In the method of estimating a signal-to-interference+noise ratio (SINR), either the polarities or bit values of a plurality of received data symbol samples are estimated. Then an SINR estimate is generated based on the plurality of received data symbol samples and the estimated polarities or bit values of the plurality of received data symbol samples such that the SINR estimate is not substantially dependent on the polarities or a bit value of the plurality of received data symbol samples.

1. A method of estimating a signal-to-interference+noise ratio (SINR), comprising:
 estimating polarities of a plurality of received data symbol samples; 
 converting the received plurality of data symbol samples into plurality of quasi-pilot symbol samples based on the estimated polarities by multiplying each of the plurality of received data symbol sample by an associated estimated polarity; and 
 generating an SINR estimate based on the plurality of quasi-pilot symbol samples using the multiplication results as the plurality of quasi-pilot symbol samples in an SINR estimation algorithm such that the SLNR estimate is not dependent only on the polarities of the plurality of received data symbol samples. 
 
   
   
     2. A method of estimating a signal-to-interference+noise ratio (SINR), comprising:
 estimating bit values of a plurality of received data symbol samples; 
 converting the received plurality of data symbol samples into plurality of quasi-pilot symbol samples based on the estimated polarities by multiplying each of the plurality of received data symbol sample by an associated estimated polarity; and 
 generating an SINR estimate based on the plurality of quasi-pilot symbol samples using the multiplication results as the plurality of quasi-pilot symbol samples in an SINR estimation algorithm such that the SINR estimate is not dependent only on a bit value of the plurality of received data symbol samples. 
 
   
   
     3. A method of estimating a signal-to-interference+noise ratio (SINR), comprising:
 estimating polarities of a plurality of received data symbol samples; converting the received data symbol samples into quasi-pilot symbol samples based on the estimated polarities by multiplying each of the plurality of received data symbol sample by an associated estimated polarity; and 
 generating an SINR estimate based on the quasi-pilot symbol samples using the multiplication results as the plurality of quasi-pilot symbol samples in an SINR estimation algorithm.